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單項選擇題

（）heavy commitments, we cannot accept any fresh orders.

A．Due
B．Owing to
C．Because
D．In addition to

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We are not in a position to make any offer as the goods are（）.

A.with out stock
B.out of stock
C.no stock
D.not in stock

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The two firms agreed to（）a joint venture in China.

A.embark on
B.intend
C.engage
D.enter into

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